diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 6e2562aa..34e842b3 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -5,6 +5,19 @@ Changelog for the **SODAR Core** Django app package. Loosely follows the
 `Keep a Changelog <http://keepachangelog.com/en/1.0.0/>`_ guidelines.
 
 
+Unreleased
+==========
+
+Changed
+-------
+
+- **General**
+    - Upgrade minimum Django version to v4.2.9 (#880)
+    - Upgrade minimum PostgreSQL version to v12 (#1074)
+    - Upgrade to PostgreSQL v16 in CI (#1074)
+    - Add Python v3.11 support (#1157)
+
+
 v0.13.4 (2024-02-16)
 ====================
 
diff --git a/docs/source/conf.py b/docs/source/conf.py
index c0712f2d..83c27486 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -27,9 +27,9 @@
 author = 'BIH Core Unit Bioinformatics'
 
 # The short X.Y version
-version = '0.13'
+version = '1.0'
 # The full version, including alpha/beta/rc tags
-release = '0.13.4'
+release = '1.0-WIP'
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/docs/source/major_changes.rst b/docs/source/major_changes.rst
index 32e52cca..7a349914 100644
--- a/docs/source/major_changes.rst
+++ b/docs/source/major_changes.rst
@@ -10,6 +10,52 @@ older SODAR Core version. For a complete list of changes in current and previous
 releases, see the :ref:`full changelog<changelog>`.
 
 
+v1.0.0 (WIP)
+************
+
+Release Highlights
+==================
+
+- Upgrade to Django v4.2 and Postgres v16
+- Add Python 3.11 support
+
+Breaking Changes
+================
+
+Django v4.2 Upgrade
+-------------------
+
+This release updates SODAR Core from Django v3.2 to v4.2. This is a breaking
+change which causes many updates and also potentially requires updating several
+dependencies.
+
+To upgrade, please update the Django requirement along with your site's other
+Python requirements to match ones in ``requirements/*.txt``. See
+`Django deprecation documentation <https://docs.djangoproject.com/en/dev/internals/deprecation/>`_
+for details about what has been deprecated in Django and which changes are
+mandatory.
+
+Common known issues:
+
+- Minimum version of PostgreSQL has been bumped to v12.
+- Replace ``django.utils.translation.ugettext_lazy`` imports with
+  ``gettext_lazy``.
+- Replace ``django.conf.urls.url`` imports with ``django.urls.re_path``.
+- Calls for ``related_managers`` for unsaved objects raises ``ValueError``. This
+  can be handled by e.g. calling ``model.save(commit=False)`` before trying to
+  access foreign key relations.
+
+System Prerequisites
+--------------------
+
+The minimum required PostgreSQL version has been bumped to v12. In CI we
+currently use PostgreSQL v16, but anything from v12 to above should work with
+this SODAR Core release.
+
+Python v3.11 support has been officially added in this version. Also, 3.11 is
+now the recommended Python version to be used.
+
+
 v0.13.4 (2024-02-16)
 ********************